Water → ethyl (RS)-2-[2-(1,1-dimethylethyl)pyrimidin-5-yl]-3,3-dimethylbutanoate

HRID 1088303

反応式

HRID 1088303 の反応式
C([SnH](CCCC)CCCC)CCC.Cl[C:15]([C:25]1[CH:26]=[N:27][C:28]([C:31]([CH3:34])([CH3:33])[CH3:32])=[N:29][CH:30]=1)([C:21]([CH3:24])([CH3:23])[CH3:22])[C:16]([O:18][CH2:19][CH3:20])=[O:17].N(C(C)(C)C#N)=NC(C)(C)C#N.O>C1(C)C=CC=CC=1>[CH3:34][C:31]([C:28]1[N:27]=[CH:26][C:25]([CH:15]([C:21]([CH3:22])([CH3:24])[CH3:23])[C:16]([O:18][CH2:19][CH3:20])=[O:17])=[CH:30][N:29]=1)([CH3:32])[CH3:33]

参加物

6

反応物 4

HCID 962WaterHCID 5948TributylstannaneHCID 6547AzobisisobutyronitrileHCID 14718731ethyl (RS)-2-chloro-2-[2-(1,1-dimethylethyl)pyrimidin-5-yl]-3,3-dimethylbutanoate

生成物 1

HCID 14718703ethyl (RS)-2-[2-(1,1-dimethylethyl)pyrimidin-5-yl]-3,3-dimethylbutanoate収率 88.3%

試薬・触媒・溶媒 1

HCID 1140Toluene溶媒

実験手順

Tri-n-Butyl tin hydride (1.3 cm3) was added to a solution of ethyl (RS)-2-chloro-2-[2-(1,1-dimethylethyl)pyrimidin-5-yl]-3,3-dimethylbutanoate (1.4 g) and a catalytic amount of 2,2'-azobisisobutyronitrile in dry toluene (10 cm3). The mixture was heated to the reflux temperature for a period of 11/2 hours, after which it was cooled to the ambient temperature, poured into water, and extracted into ethyl acetate. After concentration by evaporation of the solvent under reduced pressure, the residue was subjected to column chromatography on silica gel using hexane followed by ethyl acetate as eluent to give ethyl (RS)-2-[2-(1,1-dimethyl-ethyl)pyrimidin-5-yl]-3,3-dimethylbutanoate (1.1 g) as a pale yellow liquid, the spectral data of which were identical to those obtained for the sample generated in Example 9.

後処理

  1. extractionextracted into ethyl acetate
  2. concentrationAfter concentration
  3. customby evaporation of the solvent under reduced pressure

出典と根拠

ORDレコード
ord-6c4e4046336e41e4ab969e3101f5a5eb
出典データセット
uspto-grants-1990_10
特許番号
US04962109

関連ノート

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